* {
    margin: 0;
    padding: 0;
}

.res-box {
    width: 900px;
    height: 500px;
    margin: 50px auto;
    border: 1px solid red;
    padding: 30px;
    display: flex;
    justify-content: space-between;
}

.res-box .res-box-right,
.res-box .res-box-left {
    width: 440px;
    height: 500px;
    /* border: 1px solid blue; */
}

.res-box .res-box-left h3 {
    padding: 10px 0;
}


/* 单选框 */

.danxuan {
    padding: 40px 0;
}

.phones,
.password {
    color: #ccc;
}

.password {
    margin-top: 20px;
}

.phones span,
.password span {
    color: red;
}

.phones input,
.password input {
    width: 420px;
    display: block;
    margin-top: 20px;
    border: none;
    border-bottom: 1px solid #000;
    outline: none;
}

.tip1,
.tip2 {
    color: red;
    display: none;
}

.tip3 {
    color: red;
    display: none;
}

.res-box-left-bottom {
    margin-top: 30px;
}

.res-box-left-bottom span {
    color: red;
}

.res-box-left-bottom .resbtn {
    display: block;
    width: 420px;
    height: 50px;
    background-color: #000;
    color: #fff;
    border-radius: 30px;
    margin: 30px auto;
    border: none;
}

.res-box-left-bottom .resbtn:hover {
    background-color: #fff;
    color: #000;
    border: 1px solid #000;
    transition-property: background-color, color;
    transition-duration: 0.5s;
}


/*  */

.res-box-right-top {
    width: 420px;
    height: 200px;
}

.res-box-right .offbtn {
    float: right;
}


/* 必填项 */

.must-write {
    display: block;
    color: red;
    margin-top: 100px;
    float: right;
}


/* 文本框 */

.xingming {
    color: #ccc;
    margin-top: -34px;
}

.xingming input {
    width: 420px;
    display: block;
    border: none;
    margin-top: 20px;
    border-bottom: 1px solid #000;
}